CVE-2024-40903 usb: typec: tcpm: fix use-after-free case in tcpm_register_source_caps

2024-07-1212:20:44

Linux

www.cve.org

linux kernel

usb

typec

tcpm

use-after-free

vulnerability

fix

source caps

partner source caps

cve-2024-40903

EPSS

Percentile

5.1%

JSON

In the Linux kernel, the following vulnerability has been resolved:

usb: typec: tcpm: fix use-after-free case in tcpm_register_source_caps

There could be a potential use-after-free case in
tcpm_register_source_caps(). This could happen when:

new (say invalid) source caps are advertised
the existing source caps are unregistered
tcpm_register_source_caps() returns with an error as
usb_power_delivery_register_capabilities() fails

This causes port->partner_source_caps to hold on to the now freed source
caps.

Reset port->partner_source_caps value to NULL after unregistering
existing source caps.

CNA Affected

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/usb/typec/tcpm/tcpm.c"
    ],
    "versions": [
      {
        "version": "cfcd544a9974",
        "lessThan": "4053696594d7",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "b16abab1fb64",
        "lessThan": "04c05d50fa79",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "230ecdf71a64",
        "lessThan": "6b67b652849f",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "230ecdf71a64",
        "lessThan": "e7e921918d90",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/usb/typec/tcpm/tcpm.c"
    ],
    "versions": [
      {
        "version": "6.9",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "6.9",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.1.95",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.6.35",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.9.6",
        "lessThanOrEqual": "6.9.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.10",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]